Variability Study
Use a Variability Study to examine how squeak and rattle risks are affected by manufacturing variations.
The manufacturing of parts is often related to variations of tolerances and quality of materials. In addition, the assembly process adds a set of variations on dimensions and stiffness of connections, resulting in a unique product at each build. These two major processes affect the product final quality and therefore its performance.
Squeak and rattle are phenomena that are tightly related to the quality of the built parts, and performance can vary through the population of produced products.
Prerequisites:
- All previous steps in the process need to be performed.
- All E-Lines of interest and a dynamic loadcase must exist in the model.
- HyperStudy is required to execute DOE/Stochastic study.
A design variable is a system parameter that influences the system performance in the
chosen output response. Typical design variables may be a part's thickness or
material property. Ranges, with lower and upper bounds, are specified and the
variable's value will vary within the study. In SnRD, the
following model parameters can be used as design variables in the study:
- Component Thickness
- Material Characteristics
- Youngs' Modulus
- Density
- Attachment Stiffness
- Damping